Both do.
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None in lower case h but there are 4 right angles in upper case H
Perpendicular lines are ones that make right angles when they meet. For instance the letters T H E and L are all made of perpendicular line segments.
Between A and D are two letters, between D and E are no letters, between E and H are two letters, and between H and I are no letters. Therefore, there would be two letters between I and the next letter, so it would be L.
The letter is L and the number is 12.
T,Q,N,K,H,E next number